Oil-burner



w. M HOFFMAN.

0H. BURNER-- APPLICATION FILED APR. 41 I919.

1,335,166, Patentodllar;30,1920

-]/v VEN TOR Y Mun/u Jt/{OFFMIM through may be diameter 'tory absorbent material,

11- arranged .in

WILIiIAM M. HOFFMAN, 0F BUFFALO,

New CORPORATION, or BU l YORK, ASSIGNOR TO HOFFMAN PRODUCTS FFALO, NEW YORK.

OIL-BURNER.

To'all whom z'tmay concern: Be it known that I, WILLIAM M. Horn iuAN, a citizen of the United States, resid-.

111g at Buffalo, county of Erie, State of New ork, have invented a certain new and use fulmprovement in Oil-Burners, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it the same, referhad to the accompanying drawence being ings, which form a part of this specifica- Men.

My invention relates to oil burners and an object of my improvement is to provide an improved burner, producing smokeless combustion and intense heat.

I secure this object in the device illus-' trated in the accompanying drawing in which Figure 1 is an elevation partly in section on the line I-I Fig. 2 ofan apparatus embodying my invention.

Fig. 2 is a detail plan view of or receptacle, the mixing cone moved.

' Fig. 3 is a section 611 the line 'IIIIII Fig. 2.

Fig. 4 is a plan view of a mixing cone.

a is an elevated. reservoir forming a receptacle for water. 6 isa similar reservoir forming a receptacle for fuel oil. 0 is a hollow cone having an inelosed space 0 within its wall and constituting a mixer for air and fuel. The cone 0 is open-at its top in a coaxial opening a.

a is a "pipe extending from the bottom of the reservoir a to the lower portion a of the chamber 0 in the wall of the cone o. The pipe a is provided with an adjustable cock (L3 by which the flow of water there regulated. at is a pipe leading from the upper end 'of the reservoir m to the chamber a at itsupper end, at a, and provided with anadjustabl'e cook a.

(l is an oil cup, or receptacle, having an the oil cup being reel'ilarged open upper portion (1 and a concentric, upwardly open portion of smaller in which is laced at cl a refracsuch as asbestos, (l isan inclosed chamber at the lower part of the cup rl opening through its wall to the portion 11 in a series of small apertures a peripheral circle. (1 are radially extendingfins, or ribs, in the cup d .edge of the 'opening of the discharge of steam is Specification of Letters Patent.

Application filed April 4, 1 919.

Patented Mar. 30, 1920. Serial No. 287,459.

ribs rest the mixing cone 0 and upon these opened end downward and with its large concentric withsaidi cup so as to space for the passage of air under the lower wall of tliecone.

a" Is a diametrically extending passage in the bottom of the open portion 05 of the cup l. From the passage a a delivery n0zzle c rises vertically concentric with the nozzle and cone 0, its upper end e part way into the hollow of said cone. 6 is a needle valve controlling the area of passage from thedelivery nozzle 0." m is a pipe leading from the upper partfof the chamber cf to the passage a".

The operation of the above described device is as follows,- v I lVater is placed in the receptacle ,a' and fuel oil in the receptacle I). The oilflows by gravity througlrthe pipe 6 I closure (P and rises through the apertures Pinto the absorbent material in thepart of the open portion of the cup (Z. The oil is ignited on the surface of the material (i the under the lower edge of the cone 0; \Vater is admitted from the receptacle a through the pipe 0. into the cham er 0 andis vaof the combustion in the cup (1. The steam passing from the chamber through the pipe (a into the passage a" and isdischarged through, the delivery nozzle 6 into the mixing chamber 0 where it passes with the burning oil through the opening 0 with very concentrated heat and perfect combustion.

The pressure upon the surface of thel water in the receptacle a is always the same as that in the chamber 0 portion of said receptacle communicates with said chamber through the pipe 02.

The apparatus is supplied with water atthe required rate by regulating thecock a and with oil by regulating the cook 6 adjusted by the needle valve controlling. the discharge orifice of the nozzle e.

What I claim is:

porized by the heat 1'. In an apparatus of t e kind described, 105

rise nto said mixer, a delivery nozzle open- 119 leave a The 1 into the inair for its combustion is supplied 30 producing a flame because the upper said nozzle, a reserve and said mixer.

2. In an apparatus of the kind described,

an oil burner cup, means for supplying oil ,-said generator,

vapor through thereto, a conical mixer, having a wall, superimposed over said burner in such a manner as to provide a circumferential air passageway between the lower edge of the wall of said mixer and the side of said burner cup, water comn'iunicating means with the hollow wall of said mixer, a delivery nozzle disposed in said burner to project vapor into said mixing chamber, means for regulating the flow of vapor through said nozzle, vapor communicating means between the hollow wall of said mixer and said nozzle, a reserve vapor tank, vapor communicating means between saidtank. and the hollow wall of said mixer.

3. In an apparatus of the kind described, an oil burner, means for supplying oil thereto, a vapor generating chamber provided with a hollow wall and a central opening superimposed thereover to act as a mixing chamber, water communicating means with vapor communicating means to project a jet of vapor into said mixing chamber coaxially with the products of comthe flow of said vapor communicating means, a reserve vapor chest, vapor communicating means between said vapor chest and the vapor generating chamber. 7

4. In an apparatus of the kind described, an oil burner, means for supplying oil thereto, a mixer provided with a hollow wall and a central upward opening located above said burner, an exterior water tank, water combustion, means for regulating hollow municating means between said tank and the hollow wall of said mixing chamber, vapor communicating means between the hollow wall of said mixer and terminating in said mixing chamber so as to project a jet of vapor therein coaxially with the products of combustion, vapor con'imunicating means between the hollow wall of said mixer and the upper portion of said water tank so as to provlde a reserve vapor supply therein.

5. In an apparatus of the kind described, a combustion chamber, a water vapor generator disposed so asto be heated by the combustion in said chamber, means for pro.- jecting vapor into said. combustion chamber, vapor communicating means from said generator to said vapor projecting means, a water reservoir, water communicating means between said reservoir and said vapor generator, vapor communicating means between said reservoir and said vapor generator, said vapor communicating means leading to said generator disposed on the opposite side of said generator from the communicating means leading to said vapor projecting means. r

('5. In an apparatus of the kind described, a combustion chamber, a water vapor generating-chan'iber disposed so as to be heated thereby, vapor communicating means leading from said vapor generator so adapted as to project a jet of vapor into said combustion chamber, a water vapor reservoir supplied with vapor i'rom said enerator, vapor communicating means leading from said reservoir through said generator to said vapor projecting means.

In testimony whereof I sign this specification.

WILLIAM M. HOFFMAN. 

